Shaking-sieve.



PATENTED NOV. 19

J. F. DELANY.

SHAKING SIEVE.

APPLICATION FILED 11111.18, 1907.

, /NVENTo/e;

2 fa/w new? `to a table or other suitable support.

JOHN F. DELANY, OF COLONA, ILLINOIS.

SHARING-SIEVE.

Specification of Letters Patent.

Patented Nov. 19, 1907'.

Application filed January 18, 1907- Serial No. 352,981.

To all lwhom 'it may concern:

Be it known that I, JOHN F, DELANY, of Colona, in the county of Henryand State of Illinois, have invented certain new and useful`Improvements in Shaking-sieves; and I hereby declare that thefollowing-is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, which form part of thisspecification.

This.. invention is an, improvement in shaking sieve operating devices,and its object 1s to provide an eflicient, compact and simple mechanismfor shaking they sieves, instead of shaking them by holding them in thehands.

By this invention the sieves can be given a. more uniform sievingmotion, and the manual` labor of sieving is reduced to the minimum, andmay be entirely obviated if the knocker driving shaft be connected witha .motor or. other suitable power drivendevice.

.The invention is particularly designed for use in yconnection withtest-sieves, such as are used by grain buyers and millers, but it isalso useful for operating hand sieves designed for sorting, cleaning andgrading vgrain for seed; and it is also applicable for use in operatinghand sieves in bakeries and thelike. y

In the drawings I have illustrated a complete, and the at presentpreferred, machine embodying the invention, and will now describe thesame in detail, and summarize the essential parts and features of theinventionfor which protection is desired, in the claims following thespecications.

In said drawings-Figure 1 is a perspective view of the complete machinewith the sieve rem.oved.` Fig. 2 is a sectional elevation thereof Fig. 3is a detail.

The machine has a base-piece 1 which may be `provided with slots la forengagement of fastening bolts 1b by which it can be fastened To the baseare `fastened the lower ends of two spring uprights 2, 2a, which arepreferably curved` inwardly at their upper ends and bolted or otherwisesecured to the under side of la sieve supporting pan or hopper 3;whichhopper is further upheld in horizontal position, relatively to thebase, by means of inclined 1 brace-springs 2b, 2, as shown. This hopper3 is preferably formed 'of sheet `metal, and is approximatelypan-shaped, and kits upper edge may be strengthened by a l wire 3a, orin other suitable manner. Its bottom 3b is hopper-shaped, inclining fromboth ends land one side toward an outlet opening 3C in the side of thehopper furthest removed from the base. The vertical side walls 3d of thehopper' form a support and retainer for sieves 4, which are removablyplaced thereon or therein.

Preferably the sieves 4 are formed of sheet metal, and are pan-like inform, having imperforate sides 4a, and perforated or foraininous bottoms4b, the perforations in the bottoms being of any desired size and shape.

For sorting grain a set of changeable sieves are provided of differentmesh or size, so as to grade the material 4pro ierly. The pan-likesieves 4 are slightly smal er than the pan-like portion of the hopper,so that a sieve can be set over and partly in the hopper, as indicatedin the drawings, and will be securely held and supported by such hopper,and upheld a su'llicient distance above the .bottom of the hopper toallow the screenings to readily escape through the sieve into the hopperand be discharged through the openmgs 3C.

The vertical sides of the hopper may be provided with pieces of leather,or other suitable material, as shown at 3C, which serve both to maintaina close :lit between the walls of the hopper and sieve, and also tooeaden noise and prevent the sieves rattling in the hopper.

The base 1 is provided with a standard l near one end, in the upper endof which is formed a bearing for a shaft 5, having a handle 5L on itsouter end, and a knocker-cam or may be formed integral with the shaft ifdesired. rlhe knocker 51 stands in position to be pressed against by thespring 2 when the hopper is in normal position, and consequently whenthe shaft is rotated the proj ections on the knocker will successivelystrike the spring and move it away from the shaft, thus moving thehopper in one direction, while the springs return it in the oppositedirection. The spring 2 may be provided with a rubbing-plate or cam 2cof raw-hide or other suitable material to engage the knocker, and whenthe projections on the knocker clear the cam 2e the hopper is moved backby the springs.

Operation. After the base is bolted in place, the sieve that is to beused is laced on the hopper, thus closing the top tiereof as the screenand hopper, while the larger porshown-but leaving a space between itsbottom and the hopper-bottom suflicient for discharging the screenings.The material to be separated having been placed in the sieve, theoperator turns handle 5a, thereby rapidly vibrating the hopper andscreen and the smaller particles will all be discharged through tionswill be retained in the sieve, and by removing the sieve the materialcan be dumped Wherever desired by tipping the sieve. While in my machinethe sieves are in the form `o1 a pan formed of one piece of metal andhaving the bottom perforated and are not attached in any manner to theshaking shoe or hopper tray which takes the place of the ordinary shoe,thus making it easy to instantly change the sieves to perform thedifferent parts of the separating process. The ratchet eccentric orknocker operates against one side of the arched spring below the shoe,and is arranged in this manner to avoid the harsh positive movement thatis imparted to a shoe or shaker when the eccentric is directly connectedtherewith. By having the shaking hopper actuated by the knockeroperating against the spring, a smooth vibration is obtained which couldl not be obtained in the ordinary manner.

Having the sieves or trays entirely discon- I nected from the hopper andbeing shaken by l simply placing them on top of the shaking hopper is anovel feature. I am aware thatl ratchet eccentrics are used in manykinds of sieving devices but always against the sieve or shoe.

kIn my device I place the knocker so it will operate on the springbetween the point where the spring is attached to the base and where itis attached to the hopper thus obtaining a lively springing motion.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

l. In a sieve operating machine, the comv. bination of a base, ahopper-shaped pan, spring uprights and inclined braces supporting thepan on the base, a knocker-cam adapted to engage one ofthe springuprights at a point below the pan, and means i'or rotating said knocker.

2. In a sieve operating machine, the combination of a base, a pan havinga hoppershaped bottom, upright springs and inclined braces supportingthe pan on the base, and means for vibrating said pan; with a removablesieve adapted to be placed in the pan.

3. In a sieve operating machine, the combination of 'a base, ahopper-shaped pan, spring uprights and inclined braces supporting thepan on the base, a knocker-cam adapted to engage one of the springuprights at a point below the pan, and means for rotating said knocker;with a removable paniike sieve adapted to be placed in the hopper.

4. In a sieve operating machine, the combination of a base, providedwith a standard g a rotatable shaft journaled in said standard, aknocker on said shaft, a hopper-'having a discharge opening at one side,upright springs connected to the base and hopper, one of said springsengaging the knocker, and inclined brace springs also connected to thebase and hopper. i Y

5. In a sieve operating machine, the combination of a base, providedwitha standard i a rotatable shaft j ournaled in said standard, aknocker on said shaft, a hopper having la discharge opening at one side,upright springs connected to the base and hopper, one of said springsengaging the knocker, and inclined brace springs' also connected to thebase and hopper; with a removable pan-like sieve adapted-to be placed inthe hopper, and means for preventing rattling of the sieve in thehopper.

. In testimony that I claim the foregoing as my own, I affix signaturein presence of two witnesses.

JOHN F.y DELANY.

Witnesses:

` HARRY KOHLMORGAN,

ALBERT HALL.

